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June 3, 1924. 1,496.025

y cccc HE y l c. RUHE LEATHER SETTING OUT OR UNHAIRING MACHINE l g "mm" June 3, 1924. 1,496,025A

C. RUHE LEATHER SETTING OUT OR UNHAIRINCT MACHINE l Flled July 30. 1920 5 Sheets-Sheet 4 June 3, 1924- v 1,496,025

QRUHE LEATHER SETTING OUT OR UNHAIRING MACHINE :Filed July 30 1920 5 sheets-sheet 5 Patented June 3, 1924.

Unirse stares CARLETON RUHE, or NEW Yoan, N. Y.

LEATHER SETTING-OUT OR UNHAIRI-NG MACHINE Applicationk led July 30, 1920. Serial No. 400,072.

T 0 alli/17mm t may cof/wem.'

Be it known that I, CARLETON RUHE, a citizen of the United States, residing at 1000 Park Avenue, city, county, and State ot New York, have invented certain new and useful Improvements in Leather Setting- Out or Unhairing Machines, of which the following is a specification.

My invention relates to a machine for performing certain operations in working upon leather and may be called a setting-out or unhairing machine. The machine is intended to work at high speed and the series of three cylinders with different spiral pitch blades run at different rates of speed and all three cylinders play simultaneously upon the leather as it is being drawn through the machine. The problem of taking wrinkles out of leather also termed setting-out is important and difficult. Leather which has been tanned still shows the wrinkles that are vnatural to the hide of the animal. These wrinkles which occur in the leather are of much the same nature as the wrinkles in the human skin, only somewhat coarser.

They are very .difficult yto remove from all parts of the leather, the removal being usually done by hand. Leather free from wrinkles commands a higher price as when used for sole leather, whereas wrinkled leather goes to the manufacturer of seconds. The wrinkles are distributed over the leather to a varying degree and are of varying depth,A the deepest and most ditlicult wrinkles to remove being embedded in the neck and shoulders.

The unhairing or depilation includes the mechanical removal of the loosened hair on the hide and skins and it is theobject of my invention to provide a machine vwhich will accomplishthese*operations of setting out and unhairing in a simple, eitective and satisfactory manner and which will accomplish the setting-out operation on various grades and kinds of leather including bothl sole leather and upper. leather, the stock being made out of cattle hides.

In accordance with my invention I accomplish vthe widely different results above indicated as to different kinds of leather and as to their varying nature by providing a rotary machine in which three work cylinders are combined with two bedrollers giving tour lines of contact or elds of operation for the work cylindersV andA by progressively varying `the treatment ofthe leather while. l

in the machine 4`dividing the operations into three steps or stages so -that when takingoutl wrinkles, for example, the dierence y in peripheral speed of ,the wri-nkle-removing. devices ot work cylinders may be selected and graduated to carry out they operationl most eiiiciently. 'f

I also so arrange the workeylinders with relation to the bed rolls thatl a loop is made in the leather while passing thru` the ma.-

chine and vwhile acted upon bythe work cylinders. IIn this way the leather isl made to hug the periphery of a lwork cylinder and the knives of. the cylinder can moreveiec` tively and completelyperform their operations. v

The leather is fed -thru the machine atl a moderate speed by the feeding or pinch roll-` ers, and altho .this speed may be` variedy I have rfound in practice a speed of 8O feet a minute is desirable.l The .peripheries of the work cylindersgo as high as 1500 feet a minute. upon each cylinder. The leather is thus acted upon say 30 times by the tirstr=work cylinder before it `lea-ves the lield. ot operation of the cylinder. The pitch of the blades on each work cylinder4 may be varied when building the cylinder. The three work cylinders are provided with blades of dif- 'ferent pitch on the Vdifferent cylinders. In

the embodiment of the invention illustrated A number of bladesrare placed` upon the drawings I provide abouta 72. inch.V

`pitch for the lirst and lowest work cylinder,

about 4t2 inch pitch for the second and about 28 for the third or to-p cylinder. I'n this way I securea wide variation of the `pitch land provide Jfor an intermediate pitchso that the act-ion of the machine on the leather `is more gradual. n Because of the easy, long pitch of the first cylinder this spreads out the leather and the wrinkles quietly and gently. It preparesthe leather. for the next operation lof the intermediate work cylinder., The next cylinder of shorter pitch acts more vigorously on the wrinkles and the third. cylinder Vof* the shortest pitch actsl most vigorously. The'spirals which work `from the middle towards the .ends of .the cylindersmooth out the wrinkles something like twohands working outwardly from the centerof the leather.

The speeds ofthe cylinders also vary. In

the form illustrated upon the drawing the' lowest cylinder with a coa-rse pitch runs at` about SOO-'1000 revolutions per minute, the medium pitch cylinder at 60G-800 and the fine pitch cylinder at lLOG-600, but of course other speeds may be used. The coarse pitch of the high speed cylinder is preferably about 72 inches, each blade making a complete wrap of the cylinder vin 72 inches of its length. The intermediate cylinder carries blades of about 4:2 inch pitch and the line pitch cylinder about 23 inch pitch. These dimensions may be varied. Lower pitches may be used. rlhe three work or blade carrying cylinders are driven in the opposite d'1- rection to the feed of the leather.

Owingto rthe relative speeds of the work cylinders, the; change in direct-ion in the path of the leather, and the drag on the leather' produced by the first or lowest work cylinder, the leather is placed under tension while passing along the loop, thus enabling the middle work cylinder to act most effectively.

There is a maximum limit to the speed of l the cylinders. The machine thus has a wide rangeof speeds and pitches and subjects the leather to the actionof cylinders of widely varied activities.

For the unhairing operation a machine is provided with sharper blades and a bed roll with a gripping surface is also substituted. The leather has been previously limed as usual to loosen the hairs and the limed leather is sent thru the machine. rlhe three work cylinders are intended to more effectively remove the hair which is removed from the Hanks where the ne hair is found and is usually ditlicult to remove. as well as from the middle of the hide.

The bed rolls are usually coated with a fairly hard rubber composition so as to provide a yielding back for the leather whilebeing operated upon in the machine. The bed rolls are pressed against the work cyl inder by a pressure of as much as two tons and this heavy pressure exerted upon the leather during the. three stages in which it is operated upon when in the machine aids in efficiently carrying out the work, despite the varying thickness of the leather.

Referringnow to the drawings, Fig. 1 illustrates a vertical section of the machine showing the jaws of the machine open, the front of the machine being at theahead of the sheet.

Fig. 2 is a vertical side elevation of the right hand side of the machine, the front of the machine being shown at the bottom of the sheet andthe jaws of the machine being` closed.

Fig. 3 is a vertical elevation of the lefthand side of the machine with its front at the top ofthefsheet and the jaws of the machine being closed.

Fig. is a front elevation of the machine.

Fig. 5 is a section of the work cylinders and bed and feed rolls with the'leather in position and the jaws of the machine closed.

Fig. 6 shows one of the sectional blade carrying work cylinders.

It will be seen that the invention comprises a machine with three work cylinders l, 2, 3 and two cooperating bed rolls il, 5. The workcylinders are preferably mounted in the fixed frame 6 of the machine and the bed rolls cooperate therewith. The bed rolls may be mounted in several ways. As illus-4 trated, they are mounted in the sliding frame 7. The frames are heavily built to withstand the high pressures used and the large horse power used by the machine.

Means are provided for mounting `upon the work cylinders spiral knives or blades of diiferentpitch and for readily removing the blades or knives and substituting in their place others of vthe same or different pitch. Altho the pitch of the blades may be considerably varied, l prefer to provide the lowest work cylinder l with blades of about 72 inch pitch, meaning thereby that the blade would theoretically make one turn of the cylinder in 72 inches of the latters length; the intermediate cylinder 2 with blades of about 42 inch pitch vand the top work cylinder 3 with blades of about 23 inch pitch. rlhe blades are cast integral with their supporting frames and the frames arel made 1n sections which are strung upon the shaft of the work cylinder.

As illustrated in Fig. Gthe shaft 8 of the work cylinder l has strung upon it a plurality of sections 9 on which the cutting blades l0 are integrally cast. These sections are strung upon the shaft, each section being provided with a keyway and the shaft being provided with a key so as to hold the sections in their proper angular position in order that a continuous cutting or working edge may be obtained from the knives or blades. This is preferably eected by making a keyway along the shaft and providing keyways in the sections, so located as to bring the cutting edgesof the sections into matching relation.

Suitable nuts 11 and l2 are screwed upon the shaft clamping the cutting sections longitudinally. The other work cylinders are similarly constructed.

Means are provided for producing four fields of operation or contacting areas for the work cylinders upon the leather. I accordingly arrange and move two bed ro-lls 4t and 5 in such a manner that they will embrace the intermediate work cylinder and also force the leather into contact with the two end work cylinders, when brought into cooperative relation therewith.

The relation between the work cylinders and the bed rolls is such that a loop is formed. in. the leather, embracing a part of lOl) lll)

the periphery ofY the middle work cylinder,

Means are provided for driving the work cylinders at three different speeds so as to divide the operation into three*l steps or stages. These means` may be varied. 'As illustrated upon the drawings, the lowermost work cylinder 1 is mounted upon the drive shaft 13 of the machine, the drive shaft carrying fast ,and loose pulleys 14, 15

and being mounted in the frame of the machine as illustratedin Fig. 4, for example.

The drive shaft 13 is driven at the highest speed. say at 800 vto 1000 revolutionsvper minute andpin turn by means of the intermediate gear 16v drives the intermediate work cylinder 2 at a lower speed, say at 600 to 800 revolutionsv per mintue. A `gear 17 is secured to the lother end. of the shaft of the intermediate work cylinder 2, i. e. on the left hand side of the machine asillustrated in.

Fig. 3 and by gears 18,19 drives the top work cylinder at the lowest speed. say about 400 to 600 revolutions per minute.. Means are provided to drive the feeding mechanism. These means may be Yvaried according to the location of thefeeding mechanism and the speed desired. In the form illustrated, the top work cylinder as shown in Fig. 2 carries a gear 20 which ,meshes with a train of gearing 2.1, 22, 23. 24. 25.. thus driving the ,upper feed orpinch roll 26V at. .a much lower speed. say about 50 revolutions per. minute. Upper feedroll 26 ca rries a gear 27 with widely spaced teeth so that it may "in turn drive the feed roll 28 carrying the gear 29. the .latter meshing with the gear 27 when the jaws of themachine are closed.

The bed rolls4 and 5 are moved by the frictional drag of the leather as the latter is pulled` thru the. machine by the feed rolls..

The feed rolls pull the leather Vthru the machine in one direction dragging with them the peripheries of the bed rollsand the work cylinders carrying the tools are positively. driven so that the tools move ,oppositely to the direction of the feed ,of the leather, while working upon the same.

In the form ofthe invention illustrated, the machine includes two jaws. These jaws comprise the fixed frame 6 and the sliding frame 7. The latter jaw carries the bed rolls and slides on .ways 30 and 31 of the-main frame and is guidedxby guiderods 310 atthe 1 upper end. The bed rolls as well as the low-- er pinch roll are backed by powerful springs 32, one at each end of the roll, these springsl being adjustable so as to predetermine ther pressure upon the bed roll and also permit the latter to yield slightly. Adjustment is accomplished by means of screws 33 locked in position by lock nutsv 34. In this way a pressure yof as much. as one ton can bevexerted-upon each bed or feed roll. The bed and feed rolls are covered with rubber so. asv

to provide a yielding surface.

Means are provided, which may be varied',

enabling the operator to bring the bed rolls into cooperation with the work cylinders. In the form of the invention illustrated the operator either opens or closes the jaws of the machine by stepping upon a pedal. TheY jaws remain closed or opened asv the case may be until the operator again vsteps upon the pedal.` In the form `of the invention illustrated the main drive shaft 13 by means of gear 35 drives a large gear 36 to .which is secured a bevel gear 37 which constantly engages the beveled pinion 38 on the rock shaft 39. The latter shaft carries the worm 40. The worm 40 can engage with the worm gear 4'1 secured to counter shaft 42, the'latter carrying two cranks at opposite sides of the machine, each connected to a connecting rod 43 pivoted at 44 to the movable jaw of' the machine. By stepping upon the pedal 45 its other end 'is raised and the link 46 raises the frame 47 carrying one end of the shaft 39 and moves the shaft, thereby throwing the worm 40 into engagement with the worm gear 41. This will bring abou-t aclosing or opening of the jaws of the machine as the case may be.

Means are provided for locking Vthe jawsv n in their closed or opened position. which meansmay be varied. In the form illustrated the shaft 42 carries a cam 54 secured theretohaving two opposite recesses 48 and 49. The bell crank 50' pivoted at51 is connected vat 520 by pivot and slot connection to the frame 47 carrying one end of the shaft 39. A roller 52 or studis mount-ed in the far end of the bell crank 50 and 'is adapted to engageivh the' recess 48 or 49 as the case may be. A spring 53 pulls the bell crank 50 toward the right of Fig. f1,l and pulls the roller 52 into the recess 48, thus locking the movable'j aw 7 in open position. i

When the operator puts his foot upon the pedal the bell crank 50 is rocked and the' roller 52 is moved out of the recess 48 just before the worm 40 engages with worm wheel 41.v The movable jaw is thusunlocked 1and the worm 40 engaging with theworm wheel gives the j shaft 42a half 'revolutiongthe' roller 52 rid'- in on the cam 54 during the operation. A ter a half revolution of shaft 42 the jaws have been closed and the roller 52 drops into the recess 49 by reason of the pull of the spring This rocks the bell crank 50 and throws the worm l0 out of engagement with the worm wheel al, thus maintaining the jaws closed. The leather having been introduced into the machine with the jaws open is ted out of the machine and operated upon by the knives while the jaws are closed, the feed occurring upward and toward the operator. After the leather is out of the machine the operator once more steps upon the pedal, thereby giving the shaft A2 a half revolution and opening the jaws of the machine. With the jaws closed and the leather out of the machine the peripheries ot the bed rolls are slightly separated from the knives on the work cylinders so as not to be injured thereby.

With the above construction in mind the operation will loe clear. The jaws being wide open, the operator may insert the hide Jfrom the front of the machine over the teed roll 28, which is idle at the moment and not driven. He can lay the leather in the machine quickly and position it accurately. He then steps upon the pedal, taking his toot olil after the jaw '7 begins to move. The jaws close upon the leather and the work cylinders which act upon the leather while in a loop and at tour areas of contact, rapidly remove the wrinkles without injuring the leather. After the leather is delivered from the machine the operator steps upon the pedal which operation by means of the structure already described causes the jaws to open. After the leather is delivered from the machine it may be turned around and subjected once more to the action of the machine.

What I claim is:

l. A leather setting-out or unhairing machine comprising three work cylinders arranged in one jaw of the machine, a pair of bed rolls arranged in another jaw of the machine and cooperating with the three work cylinders, said pair of bed rolls embracing the middle work cylinder, so as to provide a looped path for the leather about said cylinder whenk acted upon by the machine and arranged to provide tour areas of contact formed by pressing the leather against the work cylinder by the two rolls and means for opening and closing the jaws of the machine.

2. A leather setting-out machine comprising three work cylinders arranged in one jaw of the machine, a pair of bed rolls arranged in another aw of the machine, said bed rolls being arranged to embrace the intermediate work cylinder so as to form a looped path for the leather about said cylinder when acted upon by the machine, means for driving the work cylinders at three diierent speeds and means tor feeding the leather thru the machine,

3. A leather setting-out machine comprising three work cylinders arranged in one jaw of the machine, a pair of bed rolls arranged in another jaw of the machine, said bedrolls being arranged to embrace the intermediate work cylinder so as to form a looped path for the leather about said cylinder, one/of said bed rolls being also arranged to cooperate with the intermediate and one oi the outer work cylinders, the otherbed roll being mounted to cooperate with the intermediate andthe other of the outer work cylinders, thereby producing four areas of contact between the bed rolls and the work cylinders, means for driving the work cylinders and means for opening and closing the jaws of the machine.

4. A leather setting-out machine compris-.

ing three work cylinders arranged 'in the fixed jaw of the machine, a pair of bed rolls arranged in the movable jaw of the machine, said bed rolls being arranged to embrace the intermediate work cylinder so as to form a looped path for the leatherl about said cylinder, one of said bed rolls being also arranged to cooperate with the intermediate' and one oi the outer work cylinders, the other bed roll being mounted to cooperate with the intermediate and the other of thev outer work cylinders, thereby producing i'our areas of contact between the bed rolls and the work cylinders, means for driving the work cylinders, means for moving the bed roll jaw toward and from the iiXed jaw of the machine, and means for feeding the leather thru the machine.

5. A leather setting-out machine comprising three work cylinders arranged in the fixed jaw of the machine, one above the other,

a pair ot bed rolls, one above the other, ar-

ranged inthe movable jaw of the machine, said bed rolls being arranged with their axes in planes intermediate those of the axes of the work cylinder, the bed rolls being arranged to embrace the intermediate work cylinder so as to form a looped path for the leather about said cylinder. one of said bed rolls being also arranged to cooperate with the intermediate and one of the outer work cylinders, the other bed roll being mounted to cooperate with the intermediate and the other of the outer work cylinders, thereby producing 'four areas of contact between the bed rolls and the work cylinders, means for driving the work cylinders. means for moving the bed roll jaw toward and from the fixed jaw of the machine, and a pair of feed rolls, one in the Xed aw and the other in the movable jaw for feeding vthe leather thru the machine. y

6. A leather setting-out machine comprising three werk cylinders' arranged in the with their axes above and below the middle and for driving the feed roll in the xed jaw work cylinder and coacting therewith so as to form a looped path' for the leather about said cylinder, said bed rolls also cooperating with the two end work cylinders thereby producing four areas of contact between the bed rolls and the work cylinders, a pair of feed rolls for the leather, one in the fixed jaw and one inthe movable jaw, means for driving the work cylinders at three different speeds at a lower speed than the lowest speed of the "work cylinders, the bed rolls being freely supported so as to be driven by the leather in its passage thru the machine, and the feed roll in the movable jaw carrying a gear which is driven by the gear on the feed roll of the fixed jaw, when the jaws are closed, andi means for opening and closing the jaws.

7. A leather setting out machine comprising three work cylinders arranged in the fixed jaw ofthe machine, a pair of bed rolls arranged in the movable jaw of the machine with their axes above and below the middle work cylinder and coacting therewith so as to form a looped path for the leather about said cylinder, said bed rolls also cooperating with the two end work cylinders thereby producing four areas of contact between the bed rolls and the work cylinders, a pair of feed rolls for the leather, onein the fixed jaw and one in the movable jaw, means for driving the work cylinders at three different Vspeeds and for driving the feed roll in' the y fixed jaw at a lower speed than the lowest speed of the work cylinders, the bed rolls being freely supported so as to be driven by the leather in its passage thru the machine, and the feed roll in the movable j awpcarrying a gear which is driven by the gear on the feed roll of the fixed jaw, when the jaws are closed, a rotatable shaft, connectionsl between said shaft and the movable -jaw and means for rotating said shaft so as to open and close said jaw.

8. A leather setting out machine comprising three work cylinders arranged in the fixed jaw of the machine, a pair of bed rolls arranged in the movable jaw of the machine with their axes above and below the middle work cylinder and coacting therewith so as to form a looped path for the leather engaging the middle work cylinder, said bed rolls also cooperating with the two end work cylinders thereby producing four areas of contact between the bed rolls and the work cylinders, a pair of feed rolls for the leather, one in the xed jaw and one in the movable jaw, means for driving the work cylinders at three different speeds and for driving the feed roll in the iixed jaw at a lower speed lution and means-for lockingsaid shaft at the end of the half revolution, so asto move and lock the jaw in position". v 9. A 4leather setting out machine comprising three `work cylinders l'arranged inthe fixed aw of the" machine a sliding mevable jaw, a pair of bed rolls arranged in thel `movable jaw and cooperating with said'three work cylinders so as to producea'` looped path about they middle work cylinder 'and four areas of contact for the leather, a shaft, connections between the shaft and the 'm'ovable jaw, driving mechanism vfor rotating said work cylinders and for` giving said shaft intermittent half revolutions "so as to open and close said jaw.

^ 10. A leather setting out machine comprising three work cylinders arranged in the fixed jaw of the machine, a feed rol-lI 'arranged above the work cylinders a sliding movable jaw, a pair of bed rolls arranged in the movable jaw ofthe machine, said bed rolls` embracing the middle work cylinder, a feed roll arranged above the bed rolls, a shaft and connections between the shaftl and the, movable jaw, means for driving said work cylinders and said shaft so as Lto give said shaft intermittent half revolutions, therebyopening and closing the jaws, said bed rolls and last named feed roll being driven from said work cylinders when the jaws are closed. A

11. A leather setting out machine comprising three work cylinders arranged in the fixed jaw of the machine, a feedl roll arranged above the work cylinders al sliding movable jaw, a pair of bed rolls arranged in the movable jaw4 of the machine, said bed rolls embracing the middle work cylinder, a feed roll arranged above the bed, rolls, a shaft and4 connections between the shaft and the movable jaw, means for driving said work cylinders, means for giving said `shaft a series of intermittent half revolutions, thereby opening and closing the j aws, means for locking said/shaft after each half revolution, thus keeping the jaws open or closed, said bed rolls and last-named feed 'roll being driven from said work cylinders when the jaws are closed.

12. A leather setting out machiner comprising three work cylinders arranged in the: fixed jaw of the machine, a feed roll 1arranged above the work'cylind'ers, a sliding movable aw, a pair ofbed rolls' yarranged in -the'movable jaw of the machine, said bed Y rolls embracing the middle work cylinder, a

feed roll arranged above the bed rolls, a shaft and connections'between the shaft and the movable jaw, means for driving said Vwork cylinders, connections between the driving mechanism and said shaft for giving said shaft a series of half revolutions,

" middle work cylinder, a feed roll arranged above the bed rolls, a countershaft and connections between the shaft and the movable jaw, means for driving said work cylinders, a gear carried by said countershaft, a worm adapted to mesh with said gear and to be driven by the drive shaft, and a pedal for throwing said worm into mesh with said som ear. g 14. A leather setting ont machine comprising three work cylinders arranged in the fixed jaw of the machine, a feed roll arranged above the work cylinders, a pair of bed rolls arranged in the movable jaw of the machine, said bed rolls embracing the middle work cylinder, a feed roll arranged above the bed rolls, a conntershaft and connections between the shaft and the movable jaw, means for driving said work cylinders,

a gear carried by the said conntershaft, a

Worm adapted to mesh with said gear and to be drive-n by the. drive shaft, and means for throwing said worm into and ont of engagement with said gear.

15. A leather setting out machine comprising three work cylinders arranged in the fixed jaw of the machine, a feed roll arranged above the work cylinders, a pair of bed rolls arranged in the movable jaw of the machine, said bed rolls embracing the middle work cylinder, a feed roll arranged above the bed rolls, a. connte-rshaft and connections between the shaft and the movable jaw, means for driving said work cylinders, a gear carried by said countershaft, a rock shaft, gearing for driving said rock shaft, a worm on said rock shaft adapted to mesh with said gear and means for throwing said worm into and out of engagement with said gear.

16. A leather setting out machine comprising three Work cylinders arranged in the fixed jaw of the machine, a feed roll arranged above the work cylinders, a pair of bed rolls arranged in the movable jaw of' the machine, said bed rolls embracing the middle work cylinder, a feed roll arranged above the bed rolls, a countershaft and connections between the shaft and the movable jaw, a drive shaft for driving said work cylinders, a gear carried by said countershaft, a rock shaft, gearing between the drive shaft and the rock shaft for driving the rock shaft, reducing gearing carried by the rock shaft adapted to engage with the gear on the countershaft, locking mechanism for the countershaft for locking it at each half revolution, connections between the locking mechanism and the rock shaft and a pedal for moving said rock shaft so as to engage the gearing on the rock shaft with the gear on the countershaft.

17. A leather setting out machine comprising three work cylinders arranged in the fixed jaw of the machine, a feed roll arranged above the work cylinders, a pair of bed rolls arranged in the movable jaw o-f the machine, said bed rolls embracing the middle work cylinder, a feed roll arranged above the bed rolls, a countershaft and connections between the shaft and the movable jaw, a drive shaft for driving said work cylinders, a gear carried by said countershaft, a rock shaft carrying a bevel gear at one end in mesh with a bevel gear driven by the drive shaft, a worm carried by the other end of the rock shaft, a frame supporting the distal end of the rock shaft, a cam provided with two recesses and'two faces carried by the co-nntershaft, a bell crank carrying a roller at one end adapted to engage said recesses and being pivoted at the other end to said frame, Yand links and a. pedal connected to said frame. j

18. A combined leather setting out and nnhairing machine comprising three work cylinders with removable and replaceable sections each carrying spiral blades, the blades on the cylinders being of different pitch and of different sharpness in accordance with the work done by the machine, the said three work cylinders being located in one jaw of the machine, a sliding carriage.

forming the other jaw of the machine, a pair of bed rolls located in said carriage, springs for backing said bed rolls, said bed rolls embracing the middle work cylinder, a feed roll carried by one of said jaws, a countershaft and connecting rods for reciprocating said sliding carriage and a driving shaft and connections for operating said countershaft and driving' said work cylinders and feed roll.

19. A combined leather setting out andA ance With the Work done by the machine, the said three Work cylinders being located in one jaw of the machine, a pair of upright frames forming part of a sliding carriage constituting the other jaw of the machine, a pair of bed rolls located in said carriage, springs for backing said bed rolls, said bed rolls embracing the middle Work cylinder, a feed roll carried by o-ne of said jaws, a pair of Ways guiding and supporting the upright frames, guide rods for guiding the upper end of said iframes, and me-ans for reciprocating said carriage.

20. A combined leather setting out and unhairing machine comprising three Work cylinders With removable and replaceable sections each carrying spiral blades, the blades on the cylinders being of diiiierent pitch and ot different sharpness in accordance With the 'Work done by the machine, the said three Work cylinders being located in one jaw of the machine, a pair of upright frames forming part of a sliding carriage constituting the other jaw of the machine,

' a pair of bed rolls located in said carriage,

springs for backing said bed rolls, said bed rolls embracing the middle Work cylinder, a feed roll carried by one of said jaws, a pair of Ways guiding and supporting the upright. frames, guide rods for guiding the upper end of said frames, mea-ns for reciprocating said carriage, and means for locking said carriage in its open and closed position.

21. A leather setting out or unhairing machine comprising three blade carrying Work cylinders arranged to Work on one side of the leather, a pair of bed rolls contacting with the opposite side oi the leather, and cooperating with the Work cylinders so as to provide a looped path for the leather, the loop engaging the middle Work cylinder When acted upon by the machine and arranged to provide four areas of contact formed by pressing the leather against the Work cylinders by the tWo rolls and means for bringing the bed rolls and Work cylinders into and out of cooperative relation with each other.

22.' A leather setting out or unhairing machine comprising three blade carrying Work cylinders arranged to Work on one side of the leather, a pair of bed rolls contacting with. the opposite side of the leather and cooperating Withthe work cylinders so as to provide a looped path for the leather when acted upon by the machine and arranged to provide four areas of cont-act formed by pressing the leather against the work cylinders by the vtwo rolls, the loop engaging the middle Work cylinder, mechanism for bringing the bed rolls into and out of cooperative relation With the Work cylinders, and a pedal for controlling said mechanism.

23. A leather setting out or unhairing" machine lcomprising three Work cylinders, a pair oi' bed rolls cooperating With thevv'ork cylinders, so as to provide a looped path for the leather When acted upon by the machine and arranged to provide four areas of contact formed by pressing the leather against the Work cylinders by the two ro-lls, the intermediate Work cylinder engaging said loop, means 'for bringing the bed rolls and the Work cylinders into and out of vcooperative relation With each other, and means for locking the rollsand cylinders in and out of cooperative relation.

24. A leather setting out or unhairing machine comprising three Work cylinders, a pair of bed rolls cooperating With the Work cylinders so as to provide a looped path for the. leather when acted upon by the machine and arranged to provide four areas of contact formed by-pressing the leather against the Work cylinders by the tvvo rolls, 'the intermediate Work cylinder engaging said loop, mechanism for bringing the bed rolls into and out of cooperative relation with the Work cylinders, locking means for locking the bed rolls in and out of Working position and a pedal for controlling said mechanism and said locking means.

25. Apleather setting out machine comprising three Work cylinders, a pair of bed rolls, said bed rolls being arranged to embrace the intermediate work cylinder so as to form a looped path for the leather about said cylinder when acted upon by the machine, means for driving vthe Work cylinders at three different speeds and means for feeding the leather thru the machine.

26. A leather setting out machine comprising three Work cylinders, a pair of bed rolls, said bed rolls being arranged to embrace the intermediate Work cylinder so as to form a looped path for the le-ather about said cylinder. one of said bed rolls being also arranged to cooperate With the intermediate and one of the outer Work cylinders, thereby producing four areas of contact between the bed rolls and the Work cylinders, means for driving the Work cylinders, and means for bringing the bed rolls and work cylinders into and out of cooperative relation with each other.

E27. A leather setting out machine comprisin'g three Work cylinders, a pair of bed rolls, said bed rolls being arranged to embrace the intermediate Work cylinder so as to `form a looped path for the leather about said cylinder, one of said bed rolls being also arranged to cooperate With the intermedia-te and one of the outer Work cylinders, the other bed roll being mounted to cooperate With the intermediate and the other of the outer Work cylinders, thereby producing four areas of contact between the bed rolls and the Work cylinders, means for driving the work cylinders, mechanism for bring'- ing the bed rolls and work cylinders into and out of cooperative relation with each other,vmeans for locking` the ro-lls and cyl- `inders in and out of cooperative relation, a

pedal for controlling said mechanism and locking means and means for feeding the leather to the machine.

28. A. leather setting out machine coniprising` three work cylinders, a pair of bed rolls, said bed rolls being arranged to embrace the intermediate work cylinder so as to form a. looped path for the leather about said cylinder when acted upon by the inachine, means for driving' the three work cylinders so that the speed ratio between the high speed cylinder and the low speed cylinder is about two to one7 and the speed ratio between the intermediate cylinder and the low speed cylinder is about three to two, and means for 'feeding' the leather thru the machine.

29. A leather setting out machine coniprisingr three work cylinders, carrying blades at three different pitches, namely one pitch tor each work cylinder, a pair of bed rolls, said bed rolls being arranged to embrace the intermediate work cylinder so as to form a looped path tor the leather about said cylinder when acted upon by the machine, means for driving the three work cylinders so that the speed ratio between the high speed cylinder which carries the coarse pitch blades and the low Speed cylinder which carries the blades of fine pitch, is about two to one, and the speed ratio between the intermediate cylinder which carries blades of intermediate pitch and the low speed cylinder is about three to two, and means for feeding the leather thru the machine in a direction opposite to that of the blades on the cylinders when contacting with the leather. i 30. A leathersetting out machine comprising three work cylinders, carrying blades at three different pitches, namely one pitch for each work cylinder, a pair ot' bed rolls, said bed rollsbeing arranged to em `brace the intermediate work cylinder so as to Form a looped path for the leather about said cylinder when acted upon by the Inachine ineens for driving thethree work cylinc .f so that the speed ratio between the high speed cylinder which carries the blades ot about Z2 inch pitch andthe low speed cylinder which carries the blades of about Q3 inch pitch, is about two to one, and the speed ratio between the intermediate cylinder which carries blades of about 42 inch pitch and the low speed cylinder is about three to two, and means for feeding the leather thru the machine in a direction opposite ytothat of the blades on the cylinders when contacting with the leather and at a speed which is less than that ot the blades.

In testimony whereof, l have signed my name to this specification, in the presence of two subscribing witnesses.y

CARLETON Rui-in,

`Witnesses VICTOR BER, LoUnLLA F LITTLE. 

